Vertical loading tests are performed at highly organic soft ground to evaluate the piled raft foundations, in which the raft is not directly connected to pile heads. The rafts are made of reinforced concrete with 3.64m square and 0.15m thickness with 21kN/m2 loadings, and four H-shaped 5m long PC piles arranged at the corner of raft. The settlement and the axial stress of piled raft foundations are compared to those of a mat foundation and a single pile tested at the same site.
